Explosion-engine.



C. H. TAYLOR & H. E. COFFIN.

EXPLOSION ENGINE.

APPLICATION FILED JUNE 21,1910.

1 a 1 85,733 Patented. June 6, 1916.

3 SHEETS-SHEET 1.

Wiznesses fire?) fares z. H. TAYLOR & HJE. COF FIN.

EXPLOSION ENGINE.

APPLICATIDN FILED JUNE 27,1910.

. 1,1 5,733, Patented June 6,1916.

- 3 SHEETS-SHEET 2- C. H. TAYLOR & H. E. COFFIN.

EXPLOSION ENGINE.

.APPLICATION FILED JUNE 27.1910.

1,185,733. Patented June 6,1916.

3 SHEETS-SHEET 3 of construction as hereinafter set forth. In the drawings; Figure 1 is a vertical longi- UNITE STATES PATEN OFFICE.

CECIL HAMELIN TAYLOR AND HOWARD E, COFFIN, OE DETROIT, MICHIGAN, ASSIG-NORS, IBY MEsNE ASSIGNMENTS, To THE DETROIT MOTOR & MACHINE COMPANY, OE DETROIT, MICHIGAN, A CORPORATION OE MICHIGAN.

EXPLOSION-ENGINE.

To all whom it may Concern: 1

Be it known that we, CECIL HAMELIN TAYLOR and HOWARD E. GOFFIN, citizens of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain-new and useful Improvements in Explosion-Engines, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to explosion engines and more particularly to the type of multi-cylinder engines provided with rotary valves.

The invention consists in various features tudinal section through the engine; Fig 2 is a cross section on'line XX, Flg. 1; Fig.

3 is asection on line YY, Fig. 1; Fig. 4

is a sectional plan view; and Fig. 5 is a per spective view'of the valve driving mechanism.

A, A, etc., are series of engine cylinders preferably integral with each other, and B is the crank case therefor. C is a crank shaft within this case having journal bearings D at opposite ends thereof.

E are rotary valves of the disk type arranged in the upper ends of the respective cylinders and mounted shafts F passing outward axially therefrom.

One of the features of our invention is the construction of mechanism for driving the rotary valves and also for driving various accessories of the engine-such as the Water pump, oil pump, magneto, etc., as follows: Each of the shafts F has mounted upon its upper end a gear wheel G, and these gears for the valves of the various cylinders are in mesh with each other forming a continuous train. As in engines of the four-cycle type, the speed of rotation of the valve shaft with respect to that of the crank shaft is one-totwo, which necessitates a step-down gear train from the crank to the series of intermeshing gears. It is desirable to restrict the Specification of Letters Iatent.

Application filed June 27, 1910. Serial No. 569,206.

superposed transversely-arranged horizonal shaft H, and from the latter to a vertical shaft I offset from the plane of the crank shaft. Pairs of spiral gears J J K K are employed to connect the crank shaft with the horizontal shaft, and the latter with the vertical shaft, and a pinion L at the upper end of the vertical shaft engages one of the gears in the train operating .the valves.

This transmission has the advantagefirst,

- that the offset relation of the vertical shaft does not increase the length of the engine casing, as would be the case if it were in the plane of the crank shaft; second, the proper ratio in the gearing may be obtained with greater convenience and range in selection in the sizes of the gears; both the vertical shaft andthe horizontal shaft are free at the ends for attachment with other pump, which, as shown, at M, is arranged near the bottom of the crank case,'and is connected to the horizontal shaft by the vertical shaft M and bevel gears M Again,

the vertical shaft I- is connected at its lower end with the oil pump N, which is arranged at the bottom of the crank case, and has its I actuating shaft N alined with and coupled to the shaft I. As has been stated, the rotary valves E are-arranged at the upper ends of the engine cylinders, and control inlet and exhaust ports therein, which ports connect with induction and exhaust passages preferably formed in the integral head of the cylinder. Adjacent valves rotate in opposite directions by reason of the intermeshing of their drive gears, and this facilitates the arrangement of the common inlet and exhaust passages and P for said cylinders, as shown in Fig. 4. These passages, as well as a Water jacket which surrounds the bearing for the stem or shaft of the valve, are

all formed in integral construction.

' The valve shafts F are preferably journaled in bearings upon opposite sides of the gear wheels G, and, as shown, the outer bearings are formed in a cap Q, or cover-of the valve case.

B are the bearmgs, preferably ball beara the series of mtermeshlng gears G for operings, which are arranged in recessed bosses Rin the cap Q. I

Q are bolts for securing the cap to the engine casing.

In operation, the motion of the crank shaft is communicated through the spiral gears J J to the horizontal shaft H, and

from the latter through the spiral gears K K to the vertical shaft I. This, through the pinion L, communicates movement to ating the valves. At the same time, the various accessories are driven, and the entire driving train is arranged compactly with out increasing the necessary dimensions of the engine casing.

What we claim as our invention is: 1. In an engine, the combination with the cylinder, of a-rotary valve having its axis parallel to the axis of the cylinder, a transmission shaft parallel to the axis of the cylinder and in a plane noncoincident with the plane of the crank shaft, a gearing connecting said transmission shaft with the crank shaft and with the valve, and an accessory to the engine driven from one end of said transmission shaft.

2. In an engine, the combination with an train between said crank shaft and rotary valve, including a plurality of shafts in engine cylinder, and a crank shaft, of a rotary valve for said engine cyllnder, a drive noncoincident planes, and a plurality of accessories driven from the intermediate shafts.

3. In an engine, the combination with the engine cylinder and crank shaft, of a rotary valve in said cylinder, a transmission shaft geared to said rotary valve and extending parallel to the axis of the cylinder in a plane noncoincident with that of the crank shaft, 'a bearing for the crank shaft, a gear mounted on said crank shaft and recessed to surround said bearing, a shaft in the plane of said gear transverse to the crank shaft and t0 the transmission shaft, and spiral gears connecting the last-mentioned shaft with the gear on the crank shaft and the shaft parallel to the axis of the engine cylinder.

shaft parallel to the axis of the cylinder, a bearing for the crank shaft extending outward beyond the plane of said transverse shaft, and spiral gears connecting the crank shaftto the transverse shaft and the latter to the shaft parallel of the axis of the cyltime inder, the crank shaft gearing being recessed to surround the bearing for the crank shaft.- v

5. In an engine, the combination with a plurality of integral cylinders, of rotary valves in said cylinders adjacent the integral head thereof, stems on said valves extending through said head, intermeshing gears on said stems, common inlet passages for each pair of cylinders formed in said head, a common exhaust passage for the entire series of cylinders formed in said head, and a water jacket surrounding said inlet and exhaust passages and the stems of said valves.

6. In an engine, the combination withan engine cylinder having a port therein, a rotary valve controlling said port, a shaft extending longitudinally of the cylinder, a drive connection between theupper end of said shaft and said valve, a crank shaft, a gear thereon, an intermediate transmission shaft driven from said gear, drive connections between said intermediate shaft and said first mentioned shaft, said transmission shaft having an extension, and an accessory to the engine driven from said extension.

7. In an engine, the combination with an engine cylinder, having a port therein, a rotary valve controlling said port, a shaft extending longitudinally of the cylinder, a drive connection between the upper end of said shaft and said valve, acrank shaft, a gear thereon, an intermediat transmission shaft driven from said gear, drive connections between said intermediate shaft and said first mentioned shaft, and accessories to the engine driven from both ends of the intermediate transmission shaft.

8. In an engine, the combination with an engine cylinder, having a port therein, a rotary valve controlling said port,'a shaft extending longitudinally of the cylinder, a

drive connection between the upper end of said shaft and said valve, a crank shaft, a gear thereon, an intermediate transmission shaft driven from said gear, drive connections between said intermediate shaft and said first mentioned shaft, a shaft driven 7 from one end of the intermediate shaft, and an accessory driven from said last mentioned shaft.

9. In an engine, the combination with a plurality of integral cylinders, of rotary valves in said cylinders adjacent the head HO thereof, stems on said valves extending through the head, intermeshing gears on the stems, common inlet passages for each pair of cylinders formed. in said head, and

a common exhaust passage for the entire series of cylinders formed in the head.

10. In an engine, the combination. with a plurality of integral cylinders having ports through the heads thereof, rotary valves controlling said ports, intermeshing gears 139 on the valve stems, common inlet passages for each pair of cylinders formed in the head, and a common exhaust passage for the entire series of cylinders formed in said head.

11. In an engine, the combination with an engine cylinder, of a rotary valve having a stem extending out through the head of said cylinder, a gear mounted on said stem, a detachable cap forming a housing for said gear, and a journal bearing for the outer end of said stem arranged within and inclosed by the detachable cap.

12. In an engine, the combination with a plurality of cylinders, rotary valves for said cylinders havingoperating stems extending out through the walls of the cylinders, intermeshing gears on said stems, a detachable cap housing said gears, and hearings on the head of the cylinder having a stem, a bearing for said stem, a gear mounted on the stem above said bearing, a cap forming a housing for the gear, and a bearing on the inner face of the cap for the outer end of the stem.

ln'testimony whereof we aifix our signatures in presence of two witnesses.

CECIL HAMELIN TAYLOR. HOWARD E. COF FIN. Witnesses:

C. W. DENNEsoN, JENNIE ANDERSON."

copies of this patent may be obtained for five cents each, by addressing the "commissioner of Patents, Washington. D. 0. 

